We really don’t have much to offer in the way of insight here, but fortunately somebody was smart enough to record the rampage on their phone. The video is about six minutes long and though the quality is poor, you do get a pretty good idea of what happened.
The damage was contained to a fairly small area as the tractor was just going around in circles. Two cars were badly damaged and you can watch it all unfold in the video below. Eventually some police cruisers show up, but they do little more than follow the tractor’s path until it eventually stops after colliding with a large light fixture.